The UM1666 is a PFM controlled step-up DC-DC converter with a switching frequency up to 1MHz.
The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-Ion battery.
Key Features
z LCD Bias Supply z White LED Supply for LCD Backlights z Digital Still Camera z PDAs, Organizers and Handheld PCs z.
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UM1666. For precise diagrams, and layout, please refer to the original PDF.
UM1666 Low Power DC/DC Boost Converter UM1666S SOT23-5 UM1666DA DFN6L 2.0×2.0 General Description The UM1666 is a PFM controlled step-up DC-DC converter with a switching ...
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e UM1666 is a PFM controlled step-up DC-DC converter with a switching frequency up to 1MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-Ion battery. The part can also be used to generate standard 3.3V/5V to 12V power conversions. With a high switching frequency of 1MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. The UM1666 has an internal 600mA switch current limit, offering lower output voltage ripple.
UM1666 Datasheet
